           package com.java.diagnostics.visualizer.impl.data;
           
           import com.java.diagnostics.visualizer.data.DomainData;
           
           public abstract class DomainDataImpl extends DataImpl
             implements DomainData
           {
             private String category;
             private String displayName = "!DISPLAYNAMEUNSET!";
           
             protected DomainDataImpl(String label, String displayName, String category) {
               super(label);
               this.category = category;
               this.displayName = displayName;
             }
           
             public String getCategory() {
               return this.category;
             }
           
             public String getDisplayName() {
               return this.displayName;
             }
           }

